SHARP
SERVICE
MANUAL $1
OUTSTANDING RECEPTION THE WORLD
OVER
ATM581
067DCK
Photograph of RT-31
H
Notice: You can make use of the item “DISASSEMBLY”,
regardless of the difference in appearance of the set,
whose photographs are all those of Model
RT-31H
(not RT-31 for SEC.)
SPECIFICATIONS
Power source:
Power consumption:
Semi-conductors:
Dimensions: Width;
Height;
Depth;
Weight:
Tape:
Tape speed
:
Wow & flutter:
Frequency response:
Normal tape;
(RT-31
H/HB)
Normal tape;
(RT-31)
AC 11 OV/22OV/24OV,
50160
Hz
(RT-31
H/HB)
AC
12OV,
50/60 Hz (RT-31)
12 wattes (RT-31
H/HB)
10
wattes (RT-31)
7
ICs
(Integrated Circuits)
12 Transistors
9 Diodes
6
LEDs
(Light Emitting Diodes)
430 mm (16-15116”)
1 15.5 mm
(4-9/l
6”)
237 mm
(9-5/l
6”)
3.9 kg (8.6
Ibs)
(RT-31 H/HB)
3.7 kg (8.2
Ibs) (RT-31)
Philips standard compact cassette
tape
4.8 cm/set. (
l-7/8 ips.)
0.19% (DIN 45 500)
0.06%
(W.R.M.S.) (RT-31
H/HB)
0.065% (W.R.M.S.)
(RT-31)
40 - 12,500 Hz (DIN 45 500)
40-ll,OOOHz~3dB
30 - 14,000 Hz
40-12,000Hz+3dB
00
DOLBY
SYSTEM
@
Noise reduction system manufactured under license
from Dolby Laboratories Licensing Corporation.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories Licensing Corporation.
RT-31
For SEC)
RT-31
H
(For SEEG, SUK, SCA
and
General)
RT-31
HB For SEW
In the interests of user-safety the set should be
restored to its original condition and only parts
identical to those specified by used.
MAXELL
UDXLII
tape;
(RT-31
H/HB)
40-14,000Hz(DIN45500)
40 - 13,000 Hz 2 3
dB
MAXELL
UDXLII
tape;
(RT-31)
30 - 15,000 Hz
40 - 13,009 Hz f 3
dB
TDK Metal tape; 40 - 16,000 Hz (DIN 45 500)
(RT-31 H/HB)
40 - 14,000 Hz f 3
dB
SONY
Fe-Cr
tape; 40 - 14,000 Hz (DIN 45 500)
(RT-31
H/HB)
40 - 13,000 Hz + 3
dB
S/N ratio (MAXELL
UDXLII
tape):
Dolby NR off;
56
dB
Dolby NR on; 66 dB (at over 5
kHz)
Input sensitivity and input impedance:
Microphones;
0.2 mV (6.8K ohms)
Line in;
50 mV (50K ohms)
DIN input;
0.2 mV
(6.8K
ohms) (RT-31 H/HB)
Output level and loaded impedance:
Headphones;
46 mV (“0”
dB)
, 8 ohms
Line out; 550 mV
(“0”
dB), 50K ohms
DIN output; 550 mV
(“0”
dB), 50K ohms
(RT-31 H/HB)
Specifications are subject to change without prior notice.
SHARP CORPORATION
SHARP ELECTRONICS
CORPORATION
DISASSEMBLY
(Photographs of RT-31H)
Prior to the disassembly, be sure to remove the AC supply
cord from a wall outlet and the input/output plugs from the
rear of the set. Take out a cassette tape, if loaded in the
cassette compartment,
=
REMOVAL OF CABINET
(See Figures
2-1
and
Z-2)
From the cabinet, remove four screws two each at its
right and left sides, and one screw at its rear surface.
Then take the cabinet off.
Figure 2-l
n
REMOVAL OF BOTTOM PLATE
(See Figure 2-3)
Turn the set upside down, remove two screws from the
bottom plate, and take the bottom plate off by shifting
it in the arrow direction.
n
REMOVAL OF FRONT PANEL
(See Figures 2-4 and 2-5)
18Remove four screws from the front panel.
2 Push down three stoppers at the upper surface of the
front panel, See that the front panel is now free from
the stoppers.
@
Pull the front panel frontwards.
Figure 2-4
n
REMOVAL OF MECHANISM BLOCK
(See Figures 2-6 and
3-l)
Note:
Be sure to open the cassette compartment lid before
disassembling the mechanism block,
18Remove two screws from the bottom of the set.
2 Remove two screws from the rear of the mechanism
block.
@
Detach the tape counter belt from the tape counter.
4 Remove the record/playback selector switch rod.
8
5 Remove four sockets from the mechanism block P.W.
board. Then separate the mechanism block from the set.
Figure 2-2
Figure 2-3
Figure
2-5
Figure
2-6
-2-
Figure 3-l
Figure 3-2
’
REMOVAL OF FRONT PANEL CHASSIS
(See Figures 3-2 and 3-3)
Pull out two record level control knobs
Remove one nut from the record level control,
Remove two screws.
Remove eight screws.
Remove one screw. Then the front panel chassis can be
separated from the set.
n
REMOVAL OF METER P.W. BOARD
(See Figure 3-3)
@
Push outward six tabs on the meter
P.W.
board holder,
and remove the meter P.W. board.
Figure 3-3
VOLTAGE SELECTION
(Use of RT-31H/HB)
The unit is designed to operate from
IIOV, 22OV,
or
24OV,
AC mains.
Check the voltage selector setting on the rear panel before
connecting with the AC supply cord.
Adjust the voltage selector to match your local AC power
supply.
The voltage selector is located on the rear panel of the unit.
If adjustment is necessary, use a screwdriver in order to turn
the selector in either direction until the correct voltage in the
window next to the adjusting screw.
Figure 3-4
CAUTION
(RT-31
H/HB)
If any one of the nylon bands shown in the Figure 3-5 is
once removed for some reason, be sure to reprise it to the
original place in the same appearance as before.
Figure 3-5
-3-
MECHANICAL
ADJUSTMENT
Pinch Roller Spring
Figure 4-l
n
PINCH ROLLER PRESSURE ADJUSTMENT
(See Figure 4-l and 4-2)
1.
Place the unit in play mode,
2. Use a tension gauge (0 - 500
gr.)
to push it to a part
@
of the pinch roller until the pinch roller comes away
the capstan. Next gradually weaken the force in the
reverse direction until the pinch roller hits the capstan
(that is, it begins rotating), then see that tension gauge
is reading 295 to 365 grams.
3. Make sure there are clearances
6
0
,
@and @
between
the pinch roller lever and sub. chassis.
4. If the above value is not satisfied, adjust the pinch roller
pressure spring by bending it, or replace.
n
TORQUE CHECK AT PLAY, FAST FORWARD AND
REWIND MODES
1. Put a torque measuring cassette into the set.
2. The torque values, in each mode must be as tabulated
below.
n
TAPE SPEED ADJUSTMENT
1. Using a test tape (TEAC, MTT-113C, 8
kHz
recorded), play it back at the midpoint but not at the running
start or end point.
2. Connect a frequency counter to the line output socket.
rlgure
4-z
3. Use a bladed screwdriver to adjust, through the adjusting
hole at the bottom of motor, the semivariable resistor
so that the frequency counter reads 2975 to 2995 Hz.
TEST
TAPE
MTT-1
PLAYBACK Mode
Frequency Counter
IIIIlll
13c
000
RECORD/
J
PLAYBACK
\
HEAD
Line output socket (SO3 or S04)
Figure 4-3
-
-4-
ELECTRICAL ADJUSTMENT
=
BIAS CURRENT AND BIAS OSCILLATION FREQUEN-
CY ADJUSTMENT OF RECORD AMPLIFIER
(See Figure 5-l) * SW7 is not used for model
RT-31.
I.
Connect VTVM between the test point
TPIOI
(or
TP201)
and ground.
2. Connect the vertical input terminal of oscilloscope to
the VTVM and its horizontal input terminal to CR
oscillator.
3. Apply the signal
105 kHz
from the CR oscillator to the
unit, and push the tape selector switch SW4.
4. Place the unit in record mode and adjust bias oscillation
coil
L303
so that the bias oscillation frequency is
105 kHz,
while watching Lissajous’ figure on the oscillo-
scope.
5. Push tape selector switch
SW6.
6. Adjust semi-variable resistor VR301 (ro VR302) so that
VTVM indicates 70 mV.
7. Make sure the indicated value of VTVM varies according
to each position of tape selector switch as tabulated
below.
n
ERASE VOLTAGE CHECK
(See Figure 5-2)
I.
Connect VTVM between test point
TP301
and
ground.
2. Connect oscilloscope to the output terminal of VTVM,
3. Push the tape selector switch SW6.
4. Place the unit in record mode, then see that VTVM is
value 210
mV.
n
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
(See Figure 5-3)
1.
Connect VTVM between the test point TP103 (or
TP203) and ground.
2. Push the tape selector switch SW4 and set the Dolby
NR
switch SW3 at off position.
3. Put a test tape (TEAC, MTT-114, IO kHz, 250
pWb/mm,
-10 dB recorded) into the unit and play it.
4. Adjust the head azimuth adjusting screw so that the
indicated value of VTVM reaches the maximum and a
difference in phase becomes as small as possible.
g
PLAYBACK FREQUENCY CHARACTERISTIC CHECK
(See Figure 5-4)
1. Connect VTVM to the line output socket.
2. Push the tape selector switch SW4 and set the Dolby
NR
switch SW3 at off position.
3. Put a test tape (TEAC,
MTT-217G,
12.5
kHz/l
kHz/
40 Hz, 250
pWb/mm,
-10 dB recorded) into the unit
and play it.
4. See that VTVM is showing the deviation of two different
input signals (40
kHz
and 12.5
kHz)
against the 1
kHz
input, as tabulated below.
Posit ion
Switch Indicated value
I
normal
Push SW4
37
mV
Fe -
Cr
CrOs
Push SW7
Push SW5
41
mV
52
mV
Figure
5-I
Figure 5-2
Figure 5-3
Test Tape
With 40 Hz input
Deviation against 1
kHz
input
shown by VTVM
OdBto6dB
I
With 12.5
kHz
input
(
-3 dB to 4
dB
I
-
Figure 5-4
-5-
=
PLAYBACK SENSITIVITY ADJUSTMENT
(See Figure 6-l
)
1. Connect VTVM between test point
TP103
(or TP203)
and ground.
2. Push the tape selector switch SW4 and set the Dolby
NR
switch SW3 at off position.
3. Put a test tape (TEAC, MTT-150,400 Hz, 200
pWb/mm,
recorded) into the unit and play it.
4. Adjust semi-variable resistor
VRlOl
(or VR201) so that
580 mV will be indicated on VTVM.
n
RECORD/PLAYBACK SENSITIVITY ADJUSTMENT
(See Figure 6-2) * SW7 is not used for model RT-31H.
1. Connect VTVM between test point TP103 (or TP203)
and ground.
2. Connect CR oscillator to the line input socket, and
apply the signal of oscillation frequency 400 Hz, output
level -13 dB (0 dB = 1 V) to the unit.
3. Push tape selector switch SW4 and set the Dolby
NR
switch SW3 at off position.
4. Put a normal tape (TEAC, MTT-502, blank) into the
unit, and place it in record mode. Adjust the record
level control VRIOZ (or VR202) so that the reading
of VTVM becomes 390 mV.
5. Playback the normal tape which has been recorded
in the step 4, and adjust the semi-variable resistor
VR103 (or VR203) so that the reading of VTVM be-
comes 410 mV. Repeat the steps 4 and 5 until the
VTVM reading stays in the range from 360 mV to
460
mV.
6. Put a
CrOs
tape (MAXELL, UDXL
II)
into the unit.
7. Push the tape selector switch SW5, and place the unit in
record mode.
8. Playback the
CrOz
tape which has been recorded in the
step 7, and make sure VTVM indicates the reading
within 326 mV to 487 mV.
m
PEAK LEVEL DISPLAY METER SENSITIVITY ADJUST-
MENT
(See Figure 6-3)
1,
Connect VTVM between test point TPI 02 (or
TP202)
and ground.
2. Set the Dolby NR switch SW3 at off position and
input selector switch SW2 at “LINE” position.
3. Connect CR oscillator to the line input socket, and
apply the signal of oscillation frequency 1
kHz,
316
mV
(-10
dB)
to the unit, placing it in record mode.
4. Adjust record level control VR102 (or VR202) so that
VTVM will indicate 580 mV (-4.7 dB).
5. Change the output level of CR oscillator from 316
mV
(-10
dB)
to 305 mV (-10.3
dB),
then adjust the
semivariable resistor VR601 (or VR602) so that the
segments
(LEDs)
up to 0 dB of the peak level display
meter light up.
6. Again change the output level of CR oscillator from
305 mV (-10.3
dB)
to 295 mV (-10.6 dB), then see
that the segments up to -3 dB remain lit.
n
DOLBY NOISE REDUCTION CIRCUIT CHECK
(See Figure 6-4)
1. Connect VTVM between test point TPI 03 (or
TP203)
and ground.
2. Push the tape selector switch SW4, and set the input
selector switch
SW2
at LINE
posi;tion and Dolby NR
switch SW3 at off position.
3. Connect CR oscillator to the line input socket, and
apply the signal of oscillation frequency
100
Hz, output
level -35 dB (0 dB = 1
V),
to the unit.
Figure 6-l
J
9. Put a metal tape (TDK, AC-71 I) into the unit.
10.
Push the tape selector switch SW6, and place the unit
in record mode.
11. Playback the metal tape which has been recorded in the
step
10,
and make sure VTVM indicates the reading
within 326 mV to 487 mV.
12. Put a Fe-Cr tape (SONY, CS-30) into the unit.
13. Push the tape selector switch SW7 and place the unit
in record mode.
14. Playback the Fe-Cr tape which has been recorded
in the step
10,
and make sure VTVM indicates the
reading within 326 mV to 487 mV.
Line l”PYf sccket
so1 or so2
Figure 6-2
Figure 6-3
Frequency
1 kHz 10
kHz
12.5
kHz
Indicated
45.7 to 44.5 to 42.6 to
Value 81
mV
70 mV 68.2 mV
A
Table
1
Frequency
1
kHz
10 kHz
12.5
kHz
Indicated
8.2 to 13.7 to 13.5 to
Value 16.4
mV
24.9 mV 23.4 mV
Table 2
Figure 6-4
-6-
4. Put a normal tape into the unit and place it in record
mode. Adjust the record level control
VRI
02 (or
6. Give the set the
signal
of oscillation frequency 100 Hz,
output level -50 dB (0 dB = 1 Vi, then adjust the record
VR202) so that VTVM
WIII
indicate 32.6
mV.
5. Give the set 1
kHz
signal, 10
kHz
signal and 12.5
kHz
level control VR102 (or VR202) so that VTVM will
indicate 5.8 mV.
signal one after another, then see that VTVM indicates
the reading listed in Table 1.
7. In the same manner as in the step 5 give the set 1
kHz
signal, 10
kHz
signal and 12.5
kHz.
Consequently, make
sure VTVM indicates the reading listed in Table 2.
ALIGNMENT
POINTS
Figure 7-l
VHILA3160//-1 (ICI)
~-fijTJ
FRONT
VIEW
rlgure I--L tuuIvHLtI\I I l;iKLuI I
I
i i
I
I
I f:
Q301,0302
2SCl214C
P70
I
2SA733K
MARKING SIDE
(Specifications or wiring diagrams of this model
L
7
2
I
FILIOI
FI L20
I
NOTES:
0702 2SD794P
~1
are subject to change for improvement without prior notice.)
3
I
4
5
I
6
Figure 9 SCHEMATIC
c
7
8
9
10
11
12
2SC945APT-0105,0205
7
2SC945AP
o,.*
,-I-=
A3_= 2SC945AP
C
0
E
F
G
ITES:
Parts marked with
“Q” (01
are
im-
1. Resistor:
2. Capacitor:
portant
for maintaining the safety of the
To differentiate the units of resistors, such
To indicate the unit of capacitor, a symbol
P
set. Be sure to replace these parts with
symbols as K and M are used; the symbol
K
used; this symbol P means
micro-microfar:
specified ones for main taining the
means 1000 ohm and the symbol M means
and the unit of the capacitor without
sur
safety and performance of the set.
lOOOK
ohm and the resistor without any
symbol
is
microfarad.
As to
electrolyt
symbol is ohm-type resistor. Besides, the one
capacitor,
the expression
“capacitance/wit
with “Fusible” is a fuse type.
stand voltage” is used.
is
id
:h
ic
h-
H
1
I
7
I
8
I
9
I
10
11
12
1
TIC DIAGRAM
(RT31H/HB)
-lO-
.--____ ~..
_^ .-
.__-_ __--.-- -..._,.. x __-__ - ..-.-. -.- --.-...-.-._.
_--____
I-
-__.-l”__--
1
2
3
I
4
5
6
r
E
F
G
H
~
-
rLiNE
1
--_-
r-------
-
1
2
3
4
I
5
-6
I’
Figure 11 WIRING SIDE OF PRINT
-ll-
7
8
9
10
11
12
4
A
AV
II
II
/I II II
f&h
B
3
C
D
I I
--_
----------------
____
~
A-----
------
------~
1
E
F
G
:
H
!’
7
I
8
I
9
10
I
11
I
12
IF
PRINTED WIRING BOARD
(RT91H/HB)
-12-
--.--.---------
..-. ---.---
______-_
----_--
-
.__- -_---
1
2
3
4
5
6
Q102,9202 2SC945AP ~1
A
B
C
0
E
F
G
:
H
a70
I
2SA733K
MARKING SIDE
~301,0302
2SCl214C
0702 2507940
FILIOI
FIL201
NOTES:
Pa
PC
se
%LoM
SP
sa
(Specifications or wiring diagrams of this model are subject to change for improvement without prior notice.)
1
I
2
I
3
I
4
I
5
I
6
Figure 13 SCHEMATIC
DIL
-13-
I
0103,0203 2SC945AP
0104,0204 2SC945AP
Q105,0205
2SC945AP
r
-+-
C
l
I
W-J
D
,
,
,---- - ------ --
I
,’
//
I
_-
E
l-
.’
I I
t
!=
-I
1
I’p,““’
I
I
‘ES: Parts marked with
“A” (0)
are
im-
1. Resistor:
2. Capacitor:
portant
for maintaining the safety of the
To differentiate the units of resistors, such
To indicate the unit of capacitor, a symbol P
i:
set. Be sure to replace these parts with
symbols as K and M are used; the symbol
K
used; this symbol P means micro-microfarao
specified ones for main
taming
the
means 1000 ohm and the symbol M means
and the unit of the capacitor without suer
safety and performance of the set.
IOOOK
ohm and the resistor without any
symbol
is
microfarad. As to electrolytic
svmbol
is ohm-Woe resistor. Besides. the one
capacitor, the expression “capacitance/with
-,
with “Fusible” is a fuse type.
stand voltage” is used.
I
j
7
8
10
I
11
12
IC
DIAGRAM
(FIT-31)
-14-
.
*
-.-
-
-
-swI(A
r ------- ---------
~aaomomoc3a~~o8
L-N---M_--C--X--J--i--~---~---~--~--~---~--~--~-i
:,
CT-1-t
--=zf
-A---x- -=
+,G+-
,
cm* ,?,+
1
2 3
I
4
5
/
6
I
Figure 15 WIRING SIDE OF
PRI
-15-
7
8
9
10
11
12
i
I
___---L---_---__--
---,
--_------__--------
I/
11
SW! I
SWIZ
PIPS
~’ - SWlTCH
BIAS
SWlTCH
1 I
II
’ I
‘1
I
LEFT
.
MIC
I
I
_1_
I.
7
I
8
I
9
I
10
I
11
I
12
llTED
WIRING BOARD (RT-31)
-16-
I
TOP
G)
n
m
0
0
m
D
1
BOTTOM
Figure 17 MECHANISM EXPLODED VIEW
ll
In
0
0
m
D
1
2
3
4
5
6
-
I1
$
‘\I
Y
,
0
L ,”
t,A
,’
,’
,’
2 ,*’
J/
-3s
-c
p
ii
E
F
01-504
3
1
A
B
C
D
E
F
G
!
H
I
2
3 4
5
6
*
Figure 18 CABINET EXPLODED VIEW (Use of
RTSlH/HB)
-18-
REPLACEMENT PARTS LIST
REF. NO.
PART NO.
DESCRIPTION
CODE
INTEGRATED CIRCUITS
ICI
ICZ, 3
IC4
IC5.6
IC7
VHI LA3160//-1
Pre-amplifier (Record/ AG
playback)
(LA3160)
VHINE646B//lF
Dolby B-type Noise Reduc-
AM
tion Circuit
(NE64651
VHIIR3108//-1
APSS Circuit
(IR3108)
AK
VHIIR2E02//-1
Peak Level Display Meter
AL
Driver (I
R2E02)
VHIHA178M15-1
Hall Element
(HA178M15)
AK
TRANsisToRs (RT~IH/HB)
0102,202
VS2SC945AP/-I
0103,203
VS2SC945AP/-1
0104,204
VS2SC945AP/-1
0105.205
VS2SC945AP/-I
0301,302
vs2sc1214-c-i
0701
VS2SA733-K/-l
0702
VS2SD794-Q/-l
Switching, Dolby
AB
(2SC945AP)
Record Equalization
AB
Amplifier
(2SC945AP)
Muting
(2SC945AP)
A6
Audio Amplifier (Head-
AB
phones)
(2SC945AP)
Bias Oscillation
(2SCl214C)
AC
APSS Circuit
(2SA733K)
AC
APSS Solenoid Driver AE
(2SD794Q)
0102,202
0103.203
0104,204
0105,205
TRANSISTORS (RT-31)
2SC945AP
Switching, Dolby AB
(VS2SC945AP/-1)
2SC945AP
Record Equalization
Ampli- AB
fier
(VS2SC945AP/-1)
2SC945AP
Muting
(VS2SC945AP/-1) AB
2SC945AP
Audio Amplifier (Head-
AB
phones)
(VS2SC945AP/-I)
Q301,302
Q701
a
Q702
2sc1214c
2SA733K
2SD794Q
Bias Oscillation
(VS2SC1214-C-1)
APSS Circuit
(VS2SA733-K/-l)
APSS Solenoid Driver
(VSZSD794-Q/-l)
AC
AC
AE
ZENER DIODE
(RT31H/HB)
DIODES AND LEDS (RT-31H/HB)
Dl
01,201
D301
D401
0504,505,
D506,507
D601,602,
D603
V HDl S2076//-1
Muting (1
S2076)
RH-PX1029AFZZ
LED, Record Indicator
(G L-9PR25)
RH-DX1006AFZZ
Surge Absorver (1 OE
1)
i
VHDlOEl////-1
Power Rectifier
(10El)
AB
AC
AB
AC
I
RH-PX1027AFZZ
LED, Peak Level Indicator
1 LT.3006P)
AK
“HOW TO ORDER REPLACEMENT PARTS”
To have your order filled promptly and correctly, please furnish the following information.
1. MODEL NUMBER
2.
REF. NO.
3. PART NO. 4. DESCRIPTION
As to Transistors, Diodes, Zener Diode and LED described in this parts list, they are different according to the Model RT-
31
H/HE
or RT-31,
A distinction is drawn between the
abovedescribed
items by description of the used units parenthesized.
NOTES: Parts marked with
“Q” (I)
are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
I I
/I
REF. NO.
PART NO.
DESCRIPTION
CODE
D502,604,
D605,606,
D607
D608,609,
D610
D501,611,
D612.613,
D614
D701
RH-PX1026AFZZ
LED, Peak Level Indicator
(LT.3001 N2)
AG
RH-PXl027AFZZ
LED, Peak Level indicator
1 LT-3006P)
AK
RHPX1026AFZZ
LED, Peak Level indicator
1
LT-3001
N2)
AG
3702
D703
VHDlS2076//-I
Reverse Current Prevention
AB
(I
S2076)
RH-PX1028AFZZ
LED, APSS Indicator
AC
(G L-9NG35)
VHDI S2076//-1
Reverse Current Prevention
AB
(152076)
DIODES AND
LEDS
(RT-31)
D101.201
D301
3401
1
S2076
G L8PR25
lOE1
Muting
(VHDlS2076//-1 )
AB
LED, Record Indicator AC
(RH-PX1029AFZZ)
Surge Absorver
AB
(RH-D~i006~Fzz)
D504,505,
D506,507
3601,602,
3603
lOE1
LT.3006P
Power Rectifier
(VHDlOEl////-1)
AC
LED, Peak Level Indicator
(RH-PX1027AFZZ)
AK
I
I
I
I
I
I
I
I
I
I
I
D502.604,
3605,606,
2607
D608.609
D610
1501,611,
3612,613,
II614
3701
LT-3001
N2
LT-3006P
LED, Peak Level Indicator
(RH-PXl026AFZZ)
AG
LT-3001
N2
LED, Peak Level Indicator
(RH-PX1027AFZZ)
AK
LED, Peak Level Indicator
(RH-PX1026AFZZ)
AG
3702
3703
1
S2076
G L-9NG35
1
S2076
Reverse Current Prevention
(VHDlS2076//-I )
LED, APSS Indicator
(RH-PXl028AFZZ)
Reverse Current Prevention
(vHDI S2076//-1)
AB
AC
AB
CD101
VHERD4R7JB2-1
Reverse Current Prevention
IRD4.7JB2)
AB
ZENER DIODE (RT-31)
ZDIOI
RD4.7JB2
Reverse Current Prevention
(VHERD4R7JB2-I)
AB
COILS
LlOl,
201
RCI
LZ0086AFZZ
Record Equalizer
(6.8mH)
AC
L301,302
RCI
LB0499AFZZ
Bias Step-up AD
L303
RCI
LB0555AFZZ
Bias Oscillation
AE
L401
RCILZ0062AFZZ
Noise Killer (100,~H) AC
-21-
+
For VHI LA3160//-1 (ICI ), see Figure 7-2 on
Page
7.
VHINE646B//l F
(IC2,
IC3)
I
DOLBY B-TYPE
’
‘OWE
R
CIRCUIT
TOP VIEW
=
N/C
-i OUTPUT
01
OUTPUT
u INPUT
*
REFERENCE
”
OUTPUT
N
IN PUT
-
INPUT
Figure
20-I
BLOCK DIAGRAM
VHIIR3108//-1
(IC4)
FRONT VIEW
Figure
20-2
BLOCK DIAGRAM
TOP VIEW
Figure
20-3
BLOCK DIAGRAM
VHIHA178M15-1 (IC7)
FRONT VIEW
Figure
20-4
EQUIVALENT CIRCUIT
1
2
I
3 4 5 6
&
_,’
-: b
;!
,’
,_‘.
.,
-2
i
F
G
H
1
I
2
3 4 5 6
Figure 19 CABINET EXPLODED VIEW (Use of
RT-31)
-19-
A
B
C
D
E
PARTS LIST
REF. NO.
AT501
FlLlOl
,201
VR101,201
VRIOZ,
202
VRlO3.203
VR301,302
VR601,602
ClOl,
201
Cl 04,204
Cl
06.206
C108.208
Cl 09,209
CllO,
210
c111.211
c112.212
C118.218
c121,221,
Cl 23,223
Cl 25
Cl 26,225
C226
C127.227
Cl 28,228
C135.235
Cl 36,236
Cl39
Cl 40
Cl41
Cl42
C306
C502
c503
c504
C601
C602
C603
C604
C605
C606
C607
c703.705
C706
c707
PART NO.
DESCRIPTION
CODI
i’
TRANSFORMER
CAPACITORS
RTRNPO756AFZZ
Power (RT-31
H/HB)
RTRNPO776AFZZ
Power
(RT-31)
AU
El 02,202
2103,203
VCKYATI
HE821 K 82OPF,
5OV,+lO%,
Ceramic AA
VCKYPAlHB102K .OOlMFD,5OV,+lO%,
AA
Ceramic
VCQYKAI HM273J .027MFD, 5OV,+5%,
Mylar AB
VCCSPAI H
L271
J
27OPF.
5OV,+5%,
Ceramic AA
VCTYPAI EX332J
.0033MFD,25V,45%,
AB
Semiconductor
VCQYKAlHM472J .0047MFD,50V,+_5%,Mylar
AB
VCQYKAlHM273J
.027MFD,50V,+5%,Mylar
AB
VCQYKAI HM473J .047MFD, 5OV,+5%,
Mylar
AB
VCKYPAl HBlO2K
.OOl
MFD,
5OV,+lO%,
AA
Ceramic
VCQYKAt HM562J .0056MFD,50V,45%,Mylar
AB
VCQY
KAl HM822J
.0082MFD,
5OV,
+5%,
Mylar A0
VCQYKAlHM472J .0047MFD,5OV,+5%,Myiar
AB
VCTYPAI EX123K
.012MFD, 25V,+lO%,
AA
Semiconductor
VCQYKAl HM392J
.0039MFD, 5OV,+5%,
Mylar AB
VCTYPAl EX153K
.015MFD,25V,+lO%,
AA
Semiconductor
VCTYPAl EX223K
.022MFD,25V,flO%,
AA
Semiconductor
(RT-31
H/H61
VCKZPAlHF403Z .04MFD,
5OV,
+BO -2O%,
AA
Ceramic
VCCSPAI H
L471 K47OPF.
5OV,+lO%,
Ceramic AA
VCQPKQ2AA682J .0068MFD, lOOV,+5%,
AB
Polypropylene
VCQY
KAl HM272J
.0027MFD, 50V,f5%,
Mylar AB
VCQYKAlHM123J .012MFD, 5OV,+5%,
Mylar AB
VCQYKAlHM562J .0056MFD,50V,f5%,Mylar
A0
VCQYKAl HM272J .0027MFD,5OV,f5%,
Mylar AB
VCQYKWlHM104M .lMFD,50V,+20%,Mylar
AB
VCKZPUI HF403Z .04MFD,
5OV,
i80
-20%. AA
Ceramic (RT-31
H/HBj
VCTYPAlEX682K .0068MFD,25V,+lO%,
AA
Semiconductor
VCTYPAlEX333K .033MFD,25V,_+lO%,
A0
Semiconductor
VCKZPAI HF403Z .04MFD,
5OV, +80
-2O%,
AA
Ceramic
FILTERS
RCILLO071AFZZ
Dolby,
(Low
Pass Filter)
19kHz
and
105kHz
Trap
CONTROLS
RVR-0328AFZZ
50K
ohm(B),
Playback
Sensitivity Adjust
RVR-A0166AFZZ
50K ohm(A),
Record Level
Control
RVR-M0328AFZZ
50K ohm(B),
Record
Sensitivity Adjust
RVRM0263AFZZ
20K ohm(B),
Bias Current
Adjust
RVR-M0328AFZZ
50K
ohm(B),
Peak Level
Display Meter Sensitivity
Adjust
ELECTORIC CAPACITORS
VCEALAlCClOGM lOMFD, 16V,120%
RCEZA107AFl
A
IOOMFD, lOV,?r20%
RC-EZA335AFl H
3.3MFD,50V,+20%
VCEALAI
HW224M
.22MFD, 50V. f20%
RCEZV227AFl C
220MFD. 16V.+20%
RC-EZAlOGAFlC
IOMFD,
16V,+_20%
VCEALAlHW104K .lMFD,5OV,+lO%
VCEALAI
HW334K
.33MFD. 5OV,110%
RC-EZAIOGAFIC
1 OMFD,
16V, $20%
RC-EZA475AFl H
4.7MFD.
5OV. 120%
VCEALAl
HW154M
.15MFD, 5OV,+20%
RC-EZA105AFl H
1 MFD, 5OV.
+20%
VCEALAlHW154M .15MFD,50V,&20%
RC-EZA475AFl H
4.7MFD.
5OV.
+20%
RC-EZAlOGAFlC
IOMFD,
16V,+20%
RCEZA225AFl H
2.2MFD, 50V. +20%
RC-EZA476AFl C
47MFD, 16V,lt20%
RCEZV227AF 1 C
220MFD. 16V,+20%
RC-EZAlOGAFl H
lOMFD,50V,+20%
RCEZV477AFl C
470MFD, 16V,+20%
RCEZA225AFl H
2.2MFD. 50V. +20%
RC-EZAlOGAFlC
1 OMFD,
16V, 520%
RCEZV477AFl C
470MFD, 16V, -t20%
RC-EZWI 08AFl
V
IOOOMFD,
35V. +20%
RC-EZV227AFl C
220MFD, 16V,+20%
RCEZA475AFl H
4.7MFD.
5OV.
+20%
VCEALVlEC475M 4.7MFD, 25\/.+_20%
RC-EZV105AFl H
1 MFD, 5OV.
520%
RC-EZVI 06AFl C
IOMFD,
16V,+20%
RCEZA475AFlH
4,7MFD, 5OV.+20%
VCEALVI EC475M
4.7MFD, 25V, +20%
RC-EZVlOSAFl H
1MFD. 5OV,+20%
RC-EZAI OGAFIC
IOMFD, 16V,+20%
RCEZA476AFl C
47M
FD, 16V, +20%
VCEALAl EC335M
3.3MFD. 25V. +20%
AG
AB
AK
AB
AB
AB
AB
AC
AB
AB
AC
AF
AB
AB
AC
AB
AB
AB
AC
AB
AB
A0
A0
REF. NO.
Cl 05,205
C107.207
Cl 16,216
C117,217
c119,219
Cl 20,220
Cl 22,222
Cl 24,224
Cl 29,229
Cl 30,230
Cl31,231
Cl 32,232
C133.233
Cl 34,234
Cl38
C30 1,302
c303
c304
c305
c307
C308
c50 1,
505
C506.507
c701
c704
C801
PART NO.
DESCRIPTION
CODE
RESISTORS
(Unless otherwise specified resistors are
1/4W,+5%,
Carbon Type)
-22-
R101,201
R102.202
R103.203
R104.204
R105.205
R106
RlO7,206
R207
R108.208
RIOS,
209
R111,211,
R112.212
R113.213
R114,214
VRD-ST2EE333J
VRD-ST2EElOl J
VRDST2EE682J
VRDST2EEl04J
VRD-ST2EE103J
VRDST2EE392J
VRDSTZEE472J
VRD-ST2EE392J
VRD-ST2EE680J
VRDST2EE682J
VRDST2EE332J
VRD-ST2EE184.l
VRDST2EE274J
R115.215.
R116.216
VRDST2EE332J
33K ohm
100 ohm
6.8K
ohm
1OOK
ohm
10K ohm
3.9K
ohm
4.7K
ohm
3.9K
ohm
68 ohm
6.8K
ohm
3.3K
ohm
180K
ohm
270K ohm
3.3K
ohm
AA
PARTS LIST
REF. NO. PART NO.
DESCRIPTION CODE
213
214
215
JKNBM0355AFSA
Knob, Power Switch
AE
(FIT-31/H)
JKNBM0355AFSB
Knob, Power Switch
AD
(RT-31 HB)
JKNBM0399AFSA
Knob, Tape Selector Switch/ AN
Dolby NR
Switch/Input
Selector Switch
(RT-31/H)
JKNBM0399AFSB
Knob, Tape Selector Switch/ AM
Dolby NR
Switch/Input
Selector Switch (RT-31 HB)
JKNBN0491 AFSA
Knob, Record Level Control AE
(Left) (RT-31/H)
JKNBN0491
AFSB
Knob, Record Level Control
AE
(Left) (RT31
HB)
216216
KCOUBOI IBAFZZ
Tape Counter
KCOUBOI IBAFZZ
Tape Counter
AKAK
,j_,-- .- _.,/
,j_,-- .- _.,/
I;
iI;
i
.,,I,,.,,I,,
.-CBSMC0002AGZZ
: :Bushing, AC Supp,ply’Cd;.d: ;
XB
.-CBSMC0002AGZZ
: :Bushing, AC Supp,ply’Cd;.d: ;
XB
&21,7’; )‘: :b “,: LBSHC0004AGZZ Bushing,
AC
Suppfy e&d : :A”B
&?1,7’; )‘: :b “,: LBSHC0004AGZZ ;Bushing,
AC
Suppfy e&d : :A”B
.’ ‘;‘
.’ ‘;‘,.,.
LBSHCO907AFZZ
‘Bushing, AC
Supply%&
LBSHCOB07AFZZ
‘Bushing, AC
Supply%ord
#B
#B
&as
&as
:._
‘,
:._
‘,
I
I
j”
j”
.LCHSM037BAFZZ
’
:Main
Chassis
tRTSlM/H~), f A‘M
&CHSM037BAFZZ ’ :Main
Chassis
tRTSlM/H~), f A‘M
_ ,j_
,j
ii
‘LCHSM0379AFZZ 1
Main Chassis (RT-31)
.,’ ,’
AM
‘LCHSM0379AFZZ 1
Main Chassis (RT-31)
.,’ ,’
AM
LCHSZ0087AFSALCHSZ0087AFSA
Front Panel ChassisFront Panel Chassis
ATAT
219
I
220
221
222
223
224
225
226
227
22%
229
230
231
232
233
234
235
A236
237
23%
239
(RT3l/H)
LCHSZ0087AFSB
Front Panel Chassis
AT
CRT-31 HB)
LCHSZ0090AFSA
Peak Level Display Meter AE
Chassis
LHLDW1075AFZZ
Wire Holder
AA
LHLDZl136AFZZ Holder,
Record Indicator/ AC
APSS Indicator
LH
LDZl137AFZZ
Holder,
Peak
Level Display AC
Meter
MLIFP0009AFZZ
Damper
AD
MRODM0077AFFW
Rod, Record/Playback
AC
Selector Switch
MSPRD0354AFFJ
Spring, Cassette Holder
AB
MSPRP0242AFFJ
Spring (Plate type), Cassette AA
Pressure
NBLTKOZOOAFZZ
Belt, Tape Counter
AB
PF LT-OSBSAFZZ
Felt, Rear
Reg
AA
PF LT-0440AFOO
Felt, Front Reg
AA
PRDAR0265AFZZ
Heat Sink
AD
PSHEZOOSSAFZZ
Sheet, Cassette Holder Cover AB
PSLDC3122AFZZ
Shield Plate, Record Level AC
Control
PSPAN0051 AFZZ
Spacer, Head Sink AA
PSPASO125AFSA
Spacer, Power Switch Knob
(FiT-31
IH)
PSPASOI 25AFSD
Spacer, Power Switch Knob
(RT-31
HB)
QACCL0052AFZZ AC Supply Cord
AL
: ‘QACCVOOOT
AGZZ AC
Sypply
Cord
AL
QACCZOOOZTAOF A‘i:
Supply Cord
AG
6ACCZ0053AFOO
AC
Sypply
Cord
AK
QACCB0054AF09
AC
Suppry
Cord
(RJ31HfoiUK)
QACCD0054AFOO .’ :AC
Supply Cord
(RT-31 f
AG
QLUGPOI 1 ICEFW
Lug Terminal,
(13mm)
AA
QLUGP9052AFZZ
Lug Terminal,
(17mm)
AA
QTANNOI
57AFFN Terminal, Ground
AB
TSPC-0728AFZZ
Specification Sheet (RT-31 HI AC
TSPCO740AFZZ
Specification Sheet
AC
(RT-31 HB)
TSPC0741AFZZ
Specification
Sheet
(RT-31)
AB
PF
LTB330AFOO
Felt, Cabinet AA
PSPAB0103AFFW
Spacer, Voltage Selector
AA
Socket (RT-31
H/HB)
,;
241
242
243
REF. NO. PART NO.
DESCRIPTION
CODE
245~ ’
h>?.:iTi d.&.Lr;lQ@@2&~~, .$&in& Str@:&Pin ,.&(j
;, -1:
.:‘”
$&
.( ~.‘~~~~,‘q
;;rr*,
j_):
‘.I
6
,.; :- -
%lrpply Card’(RT31 H/HB)
pY.1
245
LANG F041
ZAFZZ
Spacer, Transformer AA
Reinforcement (RT-31
H/HB)
246
PCOVP7167AFZZ
Spacer, Front Panel Chassis
247
PCUSG0083AFOO
Rubber, Cabinet
24%
PSLDM3226AFZZ
Shield Plate, Power Trans-
former IRT-31
H/HB)
249 LX-WZBOI 7CEFN Stop Washer
250
LX-BZ0244AFFF
Screw, Power Switch
Retaining
CNPl QCNCM439FAFZZ
Connecting Plug (B-Pin)
AB
CNP2 QCNCM431 BAFZZ
Connecting Plug (Z-Pin)
AA
CNP3
QCNCM502HAFZZ
Connecting Plug (8-Pin)
AC
CNP4
QCNCM512BAFZZ
Connecting Plug (Z-Pin) AB
CNSI QCNW-1140AFZZ
Connecting Socket (6-Pin) AK
CNS2 QCNW-1141 AFZZ
Connecting Socket (Z-Pin) AE
CNS3
CCNCW324HAFOZ Connecting Socket
(8.Pin)
CNS4
CCNCW323BAF05
Connecting Socket (Z-Pin)
QCNW-0718AFZZ
Connecting Cord, RCA-Pin AH
Jvw
QCNW-0727AFZZ
Connecting Cord, DIN Type, AP
75cm (RT-31
H/HB)
QCNW-Ol
39AFZZ
Connecting Cord, DIN Type,
150cm
(RT31H
for UK)
QCNW-1117AFZZ
5 Lead of Jumper
AD
QCNW-1 1
18AFZZ
3 Lead of Jumper
AC
QCNW-11
ZOAFZZ
2 Lead of Jumper
AB
Jl
QJAKJOO94AFZZ
Jack, Headphones AE
J2
QJAKE0079AFZZ
Jack, Microphone Left
AE
J3
QJAKE0079AFZZ
Jack, Microphone Right
AE
iff501
;QiS;CBOlCAGNl
Fuse,
lBOOmA/250V
AE
“*i -( ., ,_
QFSRD1054AFZZ
.(RT-31
H/HB)
Fuse Holder
(FIT-31 H/HB)
AA
sol,
2.
so3,4
so5
SO501~
.
SW1
(A-:N)
SW2 IA,
B)
SW3 (A, B)
SW4
(A,
B)
SW5
(A-D)
sw6 (A-D)
SW7 (A-D)
(RT-31
H/HB:
SW8
SW10
SW1 1
SW12
SOL1
QSOCJ0483AFZZ
Sockets,
SOI,
2 Line Input
AE
SO3,4
Line Output
QSOCD0583AFZZ
Socket, DIN (5-Pin) AE
Record/Playback
IRT-31
H/HB)
dSOCEO558AFZZ Socket;
Voltage Selector
dG
“(RJ31
HMB)
QSW-S0319AFZZ
Switch, Record/Playback AH
Selector
Switches,
QSW-P0314AFZZ
SW2;
Input Selector
AO
(RT-31
H/HBI
SW3; Dolby NR
QSW-PO31 SAFZZ
SW4; Tape Selector
AP
(RT-31)
(Normal)
SW5; Tape Selector (CrOz
1
SW6;
Tape Selector (Metal)
SW7; Tape Selector
(Fe-01
(RT-31
H/HB)
QSW-P0332AFZZ
Switch, Power (RT-31
H/HB) AE
QSW-P0343AFZZ
Switch, Power
CRT-311
AF
QSW-F0137AFZZ
Switch, Muting
AE
QSW-FO157AFZZ
Switch, APSS
AD
QSW-F0165AFZZ
Switch, Bias
AD
RPLU0135AFZZ
Solenoid, APSS
(RT-BlH/HB)
AM
RPLUDI 38AFZZ
Solenoid, APSS
(RT-31)
AK
QPLGA0250AFZZ
AC Adaptor
AF
QPLGA0251 AFZZ AC Adaptor
AE
SPAKAOJ52AFZZ
Cushion, Packing Case, Left
AE
SPAKA0767AFZZ
Cushion, Packing Case, Right
AE
SPAKCl706AFZZ
Packing Case
(RT-3lH)
AH
SPAKC1743AFZZ
Packing Case (RT-31 HB)
AH
-25-
PARTS LIST
REF. NO.
PART NO.
DESCRIPTION CODE REF. NO.
PART NO.
DESCRIPTION
CODE
017
LX-HZ0056AFFD
018
LX-HZ0077AFZZ
019
LX-HZ0078AFZZ
020
LX-HZ0080AFZZ
021
LX-HZ0081
AFZZ
022
LX-HZ0085AFZZ
023
LX-WZ0014AGFK
024 LX-WZ501
BAGZZ
025
LX-WZ5020AGZZ
026
LX-WZ9053AFZZ
027
LX-WZ9064AFZZ
028
LX-WZ9065AFZZ
029
MCAMP0054AFZZ
030
MLEVFI 120AFZZ
031
MLEVF1234AFFW
032
MLEVP0215AFZZ
033
M LEVP021
GAFZZ
034
MLEVP0217AFZZ
035
MLEVP0218AFZZ
036
MLEVP0219AFZZ
037
MLEVP0220AFZZ
038
MLEVP0221 AFZZ
039
MLEVP0222AFZZ
040
MLEVP0223AFZZ
041
MLEVP0224AFZZ
042
MLEVP0225AFZZ
043
M LEVP0226AFZZ
044
MLEVP0227AFZZ
045
MLEVP0228AFZZ
046
MLEVP022QAFZZ
047
MLEVPO23OAFZZ
048
M LEVP0231
AFZZ
049
MLEVP0232AFZZ
050
M LEVP0233AFZZ
051
MLEVP0234AFZZ
052
MLEVP0235AFZZ
053
MLEVPO236AFZZ
054
MLEVP0237AFZZ
055
MLEVPO239AFZZ
056
MLEVP0297AFZZ
057
MSPRC0229AFFJ
058
MSPRC0230AFFJ
059
MSPRC0231 AFFJ
060
MSPRC0248AFFJ
061 MSPRD031
IAFFJ
062
MSPRD0312AFFJ
063
MSPRD0314AFFJ
064
MSPRD0315AFFJ
065
MSPRD031 GAFFJ
066
MSPRD0317AFFJ
067
MSPRD0318AFFJ
068
MSPRD0335AFFJ
069
MSPRDO349AFFJ
070
MSPRD0357AFFJ
071
MSPRP0251 AFFJ
072
MSPRP0278AFFJ
073
074
MSPRT0739AFFJ
Spring, Record Prevention
A%
Lever
MSPRT0740AFFJ
Spring, Auto Stop Killer
A%
075
MSPRT0741
AFFJ
Spring, Brake Lever/Lock
Release Lever
Spring, P.A.D. Lock Lever
Spring, Cassette Lock Lever/
Play Release Lever
Spring, Pause Lever
Spring, Play Lever
Spring, Sub Chassis
Steel Ball 2mm Dia
Belt,
Flywheel Drive
Belt, Play
Turntable, Take-up
Turntable, Supply
Flywheel Assembly
Gear, P.A.D.
Gear, Play
Gear, Play Drive
Idler, Play
Idler, Rewind
Pulley
Fast-forward Roller Assembly
Rewind Roller Assembly
Pressure Roller Assembly
Shaft, Pulley
Shaft, Record Conversion
Lever
Cushion, P.A.D. Lever
Erase Head
Record/Playback Head
Motor DC
Earth Terminal with Lead
AB
AA
A%
Screw, 3mm Dia x
tI0mm
Screw,
2.6mm
Dia x
tlOmm
Screw,
2.6mm
Dia x
tl2mm
Screw, 3mm Dia x
t25mm
Screw, 3mm Dia x
t30mm
Screw, Record/Playback
Selector Switch Interlocking
Lever Retaining
Lock Washer,
2.6mm
Dia
Washer, 2.1 mm Dia
Washer, I .7mm Dia
Washer, Oil Cut
,AA
Washer, 1.5mm Dia
Washer, 2mm Dia
Cam, Pause
A%
Lever, P.A.D.
AD
Lever, Record/Playback AC
Selector Switch
interlocking
Lever, Cassette Lock
A%
Lever, Record
A%
Lever, Play
A%
076
MSPRT0743AFFJ
077
MSPRT0744AFFJ
AB
AB
078
MSPRT0745AFFJ
079
MSPRT0746AFFJ
080
MSPRT0747AFFJ
081
NBALS0006AGFJ
082
NBLTHOO76AFZZ
083
NBLTK0184AFZZ
084
NDAIR0150AFSA
085
NDAIROl51AFSA
086 NFLYCOOQOAFZZ
087
NGERH0066AFZZ
088
NGERH0067AFZZ
089 NGERP0051 AFZZ
090
NIDR-0073AFZZ
091
NIDR-0074AFZZ
092 NPLY ROO76AFZZ
093
NROLV0017AFZZ
094
NROLX0014AFZZ
095
NROLY0037AFZ-Z
096
NSFTN0008AFFW
097
NSFTTOI
48AFFW
AB
AB
AB
AA
AC
A%
AG
AE
AP
A%
AE
A%
AD
AB
A%
AF
AF
AE
A%
AD
Lever, Rewind
Lever, Fast-forward
Lever, Pause
Lever, P.A.D. Lock
Lever, Auxiliary P.A.D. Lock
Lever, Start
Lever, Eject Prevention
Lever, Record Prevention
Lever, Lock Release
Lever, Brake Release
Lever, APSS Switch
Lever, Fast-forward/Rewind
Prevention
Lever, Record Sensor
Lever, Sub Chassis Lock
Lever, Play Release
Lever, Brake
Lever, Auto Stop Killer
Lever, Sensor
Lever, Erase Prevention
Lever, Record Interlocking
Lever, Thrust
Lever, Damper
AB
AC
A0
AD
AC
AC
098
PGUMR0052AFZZ
099
RHEDA0080AFZZ
100
RHEDHOOQI AFZZ
101
RMOTVOOSSAFZZ
102
QCNW-0964AFZZ
AB
AL
AR
AV
AC
MISCELLANEOUS
201
GCAB-31.14AFSA
Cabinet
‘.
AQ
202
GCOVAl248AFSA
Cover, Peak Level
Dispaly
AH
203
204
Meter (Transparent)
GCOVAI 249AFSA Cover, Cassette Holder AG
(Transparent)
GCOVA1257AFSA
Scale, Peak Level Display AH
Meter
GFTACI
157AFSA Cassette Holder
(RT-31/H)
AH
GFTACI
157AFSB
Cassette Holder
CRT-31
HB) AH
GITAU0017AFZZ
Bottom Plate
AF
HDECA0457AFSA
Decoration Plate, Cassette AG
Holder Cover
(RT-31/H)
HDECA0457AFSB
Decoration Plate, Cassette AG
Holder Cover lRT-31 HB)
HDECA0456AFSA
Decoration Plate, Peak Level AD
Display Meter
(RT-31/H)
HDECA0456AFSB
Decoration, Plate, Peak Level AD
Display Meter
CRT-31
HB)
HDECB0157AFSA
Mirror, Cassette Compart- AC
ment
(RT-31/H)
HDECBOI 57AFSB
Mirror, Cassette Compart- AC
ment
(RT31HB)
205
306
Spring, Pause Lever Pin
Spring, Head Azimuth
Spring, APSS Solenoid
Spring, Sensor Lever
Spring, Over Stroke
Spring, P.A.D. Lock Lever
Spring, Pinch Roller
Spring, Record Sensor Lever
Spring, Fast-forward/Rewind
I
Release
Spring, Pinch Roller Return
Spring, Pause Cam
Spring, Sub Chassis Lock
Lever
Spring, P.A.D. Gear
Spring, Dumper Lever
Spring (Plate type), Sub
Chassis Retaining
Spring, (Plate type), Cassette
Press
207
208
209
HDECB0158AFSA
Scale Plate, Cassette Compart- AD
ment
(RT-31/H)
HDECBOlSBAFSB
Scale Plate, Cassette
Cornpart-
AC
ment lRT-31 HB)
HPNLC3476AFSA
Front Panel (RT-31 H)
AX
HPN
LC3476AFSB
Front Panel (RT-31 HB)
AY
HPNLC3494AFSA
Front Panel
(RT-31)
JKNBK0235AFSA
Knob, Record Level Control AF
(Right)
(RT-31/H)
JKNBK0235AFSB
Knob, Record Level Control AF
(Right1
(RT31HB)
210
21
1
212
Q
-24-
PARTS LIST
REF. NO. PART NO.
R117.217
R118.218
RI 19,219
R120.220
R121
,221
R122,222
RI
23,223
R124,224
RI 25,225
R126.226
R127.227
Rl28,228
Rl29.229
Rl30.230
R131,231,
R132,232
R133.233
R134,
234
R135.235
Rl36.236
R137.237
RI 38,238
R139,239
R140,240
Rl41,241
R142
R743.243
R144.244
RI45
R146,246
V R D-ST2EE473J
VRD-ST2EE103J
VRD-STZEElOlJ
VRD-ST2EE181J
VRDST2EE123J
VRD-ST2EE564J
VRDST2EE153J
VRDST2EE152J
VRD-ST2EE223J
VRD-ST2EE104J
V RDST2EE472J
V R D-ST2EE470J
VRD-ST2EE472J
VRD-ST2EE222J
VRD-ST2EE332J
VRD-ST2EE123J
VRD-STZEEl52J
VRDSTZEE682J
VRDST2EE102J
VRD-STZEE823J
V RDST2EE122J
VRD-ST2EE152J
VRD-ST2EE820J
VRDST2EE561 J
VRD-STZEEl81 J
VRD-ST2EE333J
VRD-STZEE562J
VRD-ST2EE223J
VRD-ST2EEl05J
VRGST2EA680J
R147
R148
RI49
RI50
RI51
R152,252
R153
R301
R302
V
RD.ST2EE680J
VRDST2EEl03J
VRDST2EE224J
VRD-STZEE181J
‘.I I=? D-ST2EE563J
VRD-ST2EE103J
VRD-STZEEl02J
VRD-STZEEl
ROJ
VRD-STZEElOlJ
VRSPT3DB680K
R303
R304
R305.306
R307
R308,309
R310
R311
R313.314
R501
R504
R505
R506
R601
R602.
603
R604
R605.606
R607
R608
R609,
610
R611
VRD-STZHA680J
VRDSTZEE820J
VRDST2EE223J
VRDST2EE222J
VRDST2EElOOJ
VRD-ST2EE820J
VRD-ST2EE680J
VRDSU2EE182J
VRG-ST2ECl2OJ
VRD-ST2EE120J
VRDST2EE681J
VRDST2EE222J
VRGST2HAl
ROJ
VRD-ST2EE104J
VRD-ST2EE153J
VRD-ST2EE183J
VRD-ST2EE822J
VRG-STZEA220J
VRD-ST2EE220J
VRDST2EE104J
VRD-ST2EE153J
VRDST2EE183J
DESCRIPTION
47K ohm
IOK
ohm
100 ohm
180 ohm
12K ohm
560K ohm
15K ohm
1.5K
ohm
22K ohm
IOOK ohm
4.7K
ohm
47 ohm
4.7K
ohm
2.2K
ohm
3.3K
ohm
12K
ohm (R-i-31
H/HB)
15K ohm (RT-31
H/H61
6.8K
ohm
IK
ohm
82K ohm
1.2K
ohm
1.5K
ohm
82 ohm
560 ohm
180 ohm
33K ohm
5.6K
ohm
22K ohm
IM
ohm
68 ohm
ll4W *5%
Oxide
I I
Film (RT-31
H/HBI
68 ohm
(RT-31)
10K ohm
220K
ohm
180 ohm
56K ohm
IOK
ohm
1Kohm
1
ohm
100 ohm
68 ohm,
2W,+lO%,
Fusible
(RT-31
H/HBj
68 ohm,
1/2W.+5%.
Carbon
(RT-31)
82 ohm (RT-31
H/HB)
22K ohm
2.2K
ohm
10 ohm
82 ohm
68 ohm (RT-31
H/HB)
1.8K
ohm
(RT-31)
12 ohm,
1/4W,+5%,
Fusible
IRT-SlH/HB)
12 ohm
IRT-31)
680 ohm
2.2K
ohm
1 ohm,
l/ZW, ?5%,
Fusible
IOOK ohm
15K ohm
18K ohm
8.2K
ohm
22 ohm, 1/4W.
+5%,
Fusible
(RT-31
H/HB)
22 ohm
(RT-31)
100K
ohm
15K ohm
18K ohm
CODE
AA
AB
AA
AB
,AA
AA
AB
AA
AA
AA
AB
AA
AA
AA
AA
AB
AA
AA
AA
AA
-23-
:
I
REF. NO.
R612,
613
R701
R702
R703
R704
R705
R706
R707
R708
R709
R710
R711
001
PART NO.
DESCRIPTION CODE
VRDST2EE822J
VRDST2EEl03J
VRD-ST2EE152J
VRDST2EE181J
VRDST2EE822J
VRDST2EE273J
VRDST2EE121 J
VRDST2EE222J
VRDST2EE223J
V RDST2EE222J
VRDST2EE223J
VRDST2EE821 J
8.2K
ohm
10K
ohm
1.5K
ohm
180 ohm
8.2K
ohm
27K ohm
120 ohm
2.2K
ohm
22K ohm
2.2K
ohm
22K ohm
820 ohm
MECHANICAL PARTS
JBOTNOO85AFZZ
Mechanism Control Button
Assembly
(RT3l/H)
JBOTN0088AFZ.Z
Mechanism Control Button
AA
AK
AF
i
Assembly CRT-31HB)
JKNBPOI
SOAFSA
Button, Cassette Eject
001-l
001-Z
001-3
001-4
002
002-I
(RT-31/H)
J
KNBPOI 50AFSB
Button, Cassette Eject
(RT-31 HB)
JKNBP0151AFSA
Button, Record
(RT-31/H)
JKNBPOl51
AFSB
Button, Record
CRT-31
HB)
JKNBPOl52AFSA
Button, Stop
(RT-31/H)
JKNBP0152AFSB
Button, Stop (RT-31 HB)
JKNBPO153AFSA
Button, Play/Fast-forward/
Rewind/Pause
(RT-31/H)
JKNBPOI
53AFSB Button, Play/Fast-forward/
Rewind/Pause
iRT-31
HB)
JBOTN0087AFZZ
Button Block Assembly
LANGF0647AFFW
Bracket, Control Button
AR
002-2
MLEVF1248AFZZ
002-3
MLEVF1249AFZZ
002-4
MLEVP0300AFZZ
002-5
MLEVP0301
AFZZ
002-6
MLEVPO302AFZZ
002-7
MLEVP0303AFZZ
002-8
MLEVP0304AFZZ
002-9
002-I
0
002-l
1
002-l
2
002-I
3
002-l
4
M
LEVP0305AFZZ
M
LEVP0306AFZZ
M
LEVP0307AFZZ
M LEVPO308AFZZ
MSPRC0255AFFJ
MSPRP0282AFFW
002-l
5
NSFTNOOI 4AFFW
002-l
6
NSFTTO154AFFW
003
LANGF0575AFZZ
004
LANGG0078AFZZ
005
LANG
K0248AFZZ
006
LANGT0978AFZZ
007
LCHSM0361
AFZZ
008
LCHSM0386AFZZ
009
LCHSSO159AFZ.Z
010
LH
LDW3056AFZZ
011
LHLDW9002CEZZ
012
LPINZ0051
AFZZ
013
LSLVMOllSAFFW
014
LSLVMOOI
4AFFW
015
LSTWC2001 AFZZ
016
LSTWC4004AFZZ
Arm, APSS Prevention
Lever, APSS Prevention
Lever, Main Lock
Lever, Sub Lock
Lever, Pause Button
Lever, Fast-forward/Forward
APSS Button
Lever, Rewind/Reverse
APSS Button
Lever, Stop Button
Lever, Play Button
Lever, Record Button
Lever, Cassette Eject Button
Spring, APSS Prevention
Spring (Plate type), Control
Button Lever
Pin, APSS Prevention Arm
Shaft, Control Button Lever
Bracket, Flywheel
Bracket, Sub Chassis Guide
Bracket, Motor
Bracket, Head Base
Second Chassis
Mechanism Main Chassis
Sub Chassis
Wire Holder
Wire Holder
Pin, Pause Lever
Spacer, Sensor Lever
Spacer, Mechanism
P.W.
Board
Stop Ring, 2mm’ Dia
Stop Ring,
4mm
Dia
AD
AE
AC
AC
AB
AA
AA
AA
AC
AB
AA
AA
PARTS LIST
REF. NO.
PART NO.
DESCRIPTION
CODE / REF. NO.
PART NO.
DESCRIPTION CODE
SPAKC1744AFZZ
Packing Case
(RT-31)
SPAKF0053AFZZ
Wrapping Paper, Connecting AD
Cord
SSAKA0024AFZZ
Polyethylene Bag, Operation AA
Manual
SSAKHOOMAGZZ
Polyethylene Bag, Unit AB
TlNSLOl77AFZZ
Operation Manual AK
(FiT-31 H/HBl
TINSE0724AFZZ
Operation Manual (R-T-31)
Connection
AC supply cord
Bushing
Figure
0
03
QACCL0052AFZZ
LBSHC0007AFZZ
Projection
stripe
Brand stamp
w*
QACCZ0002TAOF
LBSHC0007AFZZ
Brown
Brown
QACCD0054AFOO
LBSHC0007AFZZ
Black Black
&&p-s
QACCZ0053AFOO
LBSHC0007AFZZ
Black Black
&g%gps
QACCB0054AF09 LBSHC0002AGZZ
Brown
Blue
+gis#
QACCVOOOI
AGZZ LBSHC0004AGZZ
Brown
Light blue
P.W.B. ASSEMBLY (Not replacement item)
DUNTU0070AF03
Main Circuit/Power Switch
-
(Combined Assembly) Circuit/Peak Level Indi-
cator Circuit
(RT31 H/HB)
DUNTU0070AF09
Main Circuit/Power Switch
-
(Combined Assembly) Circuit/Peak Level Indi-
cator Circuit
(RT-31)
Figure 26 AC SUPPLY CORD WIRING CONNECTIONS
SHARP CORPORATION
OSAKA,JAPAN
SHARP ELECTRONICS CORPORATION
Executive
Offrce:
10 Keystone Place,
Paramus,
New Jersey 07652 (201)
2655600
Regional Offrces &
Distribution Centers,
2 Keystone Place,
Paramus,
New Jersey 07652 (201) 265-5600
20600 S. Alameda St.
Carson,
Calif.
90810 (213) 637-9488
430 E. Plainfield Rd. Countryside, Illinois
60525
(3121
482-9292
U.S.
Subsrdiary
of Sharp Corporation, Osaka, Japan
Parts Centers:
P.O. Box 664
Paramus,
New Jersey 07652 (201) 265-5600
P.O. Box 20394
Long Beach,
Calif.
9080 1
(2
13)
637-9488
P.O.
Box 10
La Grange,
Illinois
60525 (312) 482-9292
lpYiTzz%
Printed in
Japal
Loading...